Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ

R. B. Van Dover, E. M. Gyorgy, A. E. White, Lynn Schneemeyer, R. J. Felder, J. V. Waszczak

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Abstract

Irradiation with 3.5 MeV protons creates defects in Ba2YCu 3O7-δ, which can act as strong pinning sites, comparable to those produced by neutron irradiation. Indeed protons as well as neutrons undergo momentum-transferring collisions that result in atomic displacements; the additional electronic proton-solid interaction does not appear to yield defects which contribute to pinning. Under optimized conditions we have obtained Jc(T→0, H=1 T)∼2×107 A/cm2 in single crystals. At 77 K the value is still J c∼1.7×105 A/cm2, decreasing only threefold in a field of 6 T. The fluence and temperature dependence of J c suggest a model, in which spatially uncorrelated defects pin vortex cores.

Original languageEnglish
Pages (from-to)2681-2683
Number of pages3
JournalApplied Physics Letters
Volume56
Issue number26
DOIs
StatePublished - 1 Dec 1990

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critical current
protons
single crystals
defects
neutron irradiation
fluence
vortices
momentum
neutrons
temperature dependence
irradiation
collisions
electronics
interactions

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Van Dover, R. B., Gyorgy, E. M., White, A. E., Schneemeyer, L., Felder, R. J., & Waszczak, J. V. (1990). Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ. Applied Physics Letters, 56(26), 2681-2683. https://doi.org/10.1063/1.103269
Van Dover, R. B. ; Gyorgy, E. M. ; White, A. E. ; Schneemeyer, Lynn ; Felder, R. J. ; Waszczak, J. V. / Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ. In: Applied Physics Letters. 1990 ; Vol. 56, No. 26. pp. 2681-2683.
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abstract = "Irradiation with 3.5 MeV protons creates defects in Ba2YCu 3O7-δ, which can act as strong pinning sites, comparable to those produced by neutron irradiation. Indeed protons as well as neutrons undergo momentum-transferring collisions that result in atomic displacements; the additional electronic proton-solid interaction does not appear to yield defects which contribute to pinning. Under optimized conditions we have obtained Jc(T→0, H=1 T)∼2×107 A/cm2 in single crystals. At 77 K the value is still J c∼1.7×105 A/cm2, decreasing only threefold in a field of 6 T. The fluence and temperature dependence of J c suggest a model, in which spatially uncorrelated defects pin vortex cores.",
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Van Dover, RB, Gyorgy, EM, White, AE, Schneemeyer, L, Felder, RJ & Waszczak, JV 1990, 'Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ', Applied Physics Letters, vol. 56, no. 26, pp. 2681-2683. https://doi.org/10.1063/1.103269

Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ. / Van Dover, R. B.; Gyorgy, E. M.; White, A. E.; Schneemeyer, Lynn; Felder, R. J.; Waszczak, J. V.

In: Applied Physics Letters, Vol. 56, No. 26, 01.12.1990, p. 2681-2683.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ

AU - Van Dover, R. B.

AU - Gyorgy, E. M.

AU - White, A. E.

AU - Schneemeyer, Lynn

AU - Felder, R. J.

AU - Waszczak, J. V.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - Irradiation with 3.5 MeV protons creates defects in Ba2YCu 3O7-δ, which can act as strong pinning sites, comparable to those produced by neutron irradiation. Indeed protons as well as neutrons undergo momentum-transferring collisions that result in atomic displacements; the additional electronic proton-solid interaction does not appear to yield defects which contribute to pinning. Under optimized conditions we have obtained Jc(T→0, H=1 T)∼2×107 A/cm2 in single crystals. At 77 K the value is still J c∼1.7×105 A/cm2, decreasing only threefold in a field of 6 T. The fluence and temperature dependence of J c suggest a model, in which spatially uncorrelated defects pin vortex cores.

AB - Irradiation with 3.5 MeV protons creates defects in Ba2YCu 3O7-δ, which can act as strong pinning sites, comparable to those produced by neutron irradiation. Indeed protons as well as neutrons undergo momentum-transferring collisions that result in atomic displacements; the additional electronic proton-solid interaction does not appear to yield defects which contribute to pinning. Under optimized conditions we have obtained Jc(T→0, H=1 T)∼2×107 A/cm2 in single crystals. At 77 K the value is still J c∼1.7×105 A/cm2, decreasing only threefold in a field of 6 T. The fluence and temperature dependence of J c suggest a model, in which spatially uncorrelated defects pin vortex cores.

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Van Dover RB, Gyorgy EM, White AE, Schneemeyer L, Felder RJ, Waszczak JV. Critical currents in proton-irradiated single-crystal Ba 2YCu3O7-δ. Applied Physics Letters. 1990 Dec 1;56(26):2681-2683. https://doi.org/10.1063/1.103269